Iron,
r
1
=2x10
-3
g/cm
3
NO
Iron,
r
1
=6x10
-4
g/cm
3
NO
70% H, 30% He (mass fraction)
r
1
=2x10
-3
g/cm
3
OK
70% H, 30% He (mass fraction)
r
1
=6x10
-4
g/cm
3
OK